Commissioning editor Jane Griffiths bought UK and Commonwealth rights for three new titles in the series from Angharad Kowal at Writers House UK. The deal comprises two novels continuing the series, and one spin-off journal.

The first of the new books will launch in autumn 2013, with the following books taking the publishing programme through to 2015.

Griffiths said: "Dork Diaries is now one of Simon & Schuster's most successful children's fiction brands and I'm delighted to have signed up more books from Rachel, taking our publishing programme through to 2015. Nikki's hilarious diaries about her not-so-perfect life have millions of fans worldwide and we're really excited to have more books to look forward to."

The fifth Dork Diaries title, Dear Dork, was published on 11th October.